Parameter Details
12
12.9 L: Protection Functions
YASKAWA SIEPC71061753C GA500 Technical Manual 731
The output turns off and the motor coasts to stop.
■ L8-09: Output Ground Fault Detection
No.
(Hex.)
Name Description
Default
(Range)
L8-09
(04B5)
Output Ground Fault
Detection
Sets the function to enable and disable ground fault protection.
Determined by o2-04
(0, 1)
0 : Disabled
The drive will not detect ground faults.
1 : Enabled
If there is high leakage current or a ground short circuit in one or two output phases, the drive will detect GF
[Ground Fault].
Note:
If the ground path impedance is low, the drive can detect oC [Overcurrent], SC [Short Circuit/IGBT Failure], or ov [Overvoltage]
instead of GF.
■ L8-10: Heatsink Fan Operation Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-10
(04B6)
Heatsink Fan Operation
Selection
Sets operation of the heatsink cooling fan.
0
(0 - 2)
0 : During Run, w/ L8-11 Off-Delay
The drive turns on the fan when a Run command is active.
When you release the Run command and the delay time set in L8-11 [Heatsink Fan Off-Delay Time] is expired,
the fan stops. This setting extends the fan lifetime.
1 : Always On
The fan turns on when you supply power to the drive.
2 : Temperature-Dependent Fan Ctrl.
The fan turns on when the drive detects that the main circuit is overheating.
■ L8-11: Heatsink Fan Off-Delay Time
No.
(Hex.)
Name Description
Default
(Range)
L8-11
(04B7)
Heatsink Fan Off-Delay
Time
Sets the length of time that the drive will wait before it stops the cooling fan after it cancels the
Run command when L8-10 = 0 [Heatsink Fan Operation Selection = During Run, w/ L8-11 Off-
Delay].
60 s
(0 - 300 s)
■ L8-12: Ambient Temperature Setting
No.
(Hex.)
Name Description
Default
(Range)
L8-12
(04B8)
Ambient Temperature
Setting
Sets the ambient temperature of the drive installation area.
40 °C
(-10 °C - +60 °C)
Note:
The setting range changes when the L8-35 [Installation Method Selection] value changes:
• 0 [IP20/UL Open Type]: -10 °C to +60 °C
• 1 [Side-by-Side Mounting]: -10 °C to +50 °C
• 2 [IP20/UL Type 1]: -10 °C to +50 °C
• 3 [External Heatsink/Finless]: -10 °C to +50 °C
The drive automatically adjusts the drive rated current to the best value as specified by the set temperature. Set the
ambient temperature of the area where you install the drive to a value that is more than the drive rating.
Refer to Derating Depending on Ambient Temperature on page 342 for information about derating as specified by
ambient temperature.
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